MAP Sensor question

[cactus euro]

I am in the middle of my Euro S50B30 ASA supercharger project,TSI piggyback with AFM delete.

MAP measure about 7 mmHg at idle. Is this okay?

Car is idling high (122-200rpm) and erratic and AFR is 13.8-14.2. I haven't driven the car yet.

[Highboosted]

Thats not good at all, you need -10 psi (or -500 mmHg) at idle aprox.

[cactus euro]

Thanks for the response HighBoosted. Let me clarify something:

Idle Manifold pressure of -10psi/-500mmHg: Is this absolute pressure(measure by the MAP sensor) or is this presure relative to atmospheric pressure?

(Atmospheric pressure = 760mmHg/14.7psi)

Thanks

Kevin

[Highboosted]

I posted gauge pressure (like if you were reading your boost gauge), for absolute just add the current baro pressure.

Sounds like your throttle is stuck open a tad, or your actually trying to create boost at idle (stuck or broken bypass valve on the supercharger? I'm not familiar with what supercharger they use, a pic and I can point out whatr to look for.), or large vacuum leak post-throttle.

[cactus euro]

Dear HighBoosted.

I'm using ASA supercharger from Infinitas (www.a-s-a.de). My intake manifold is now off and I can see all 6 throttle bodies. They are all closed, no spaces. Can there be a throttle leak when the car is idling? How do I verify that with the car idling?

I've checked for leaks beyond the throttle bodies using carb cleaner and no leaks found.

The ASA superchargers have a clutch sysytem that is activated at 1000rpm, but I dont think they're supposed to be making boost before 3000rpm.
I'll look into this further.

Thanks for the help so far.

[pingou]

Hi cactus euro
as you have said you have your AFM deleted, and you use a TSI, how have you do it to delete the AFM, is the AFM connected to the ECU but not use ?

[cactus euro]

Yeah, I disconnected the AFM wire from the ECU(PIN 41) and connected it to the TSI piggyback.

[pingou]

Have you more details in your wiring diagrams, can I have the one with these connections please ? Cactus Euro

[cactus euro]

Give me your email address and I will send you the diagram.

This is for the E36 M3 Euro.

Kevin

[pingou]

That good Cactus euro, I have sent you a private meassage, you can check
thanks

[pingou]

have you received it with my email address

[pingou]

Hi Cactus euro, have you received it
I have no news from you
R u ok